Product Description
The valve 6440 is a servo-assisted piston valve. The stopper and the core guide tube are welded together to increase pressure resistance and leak-tightness. The coils are moulded with highly chemically resistant epoxy. Sliding rings increase the service life for dry gases. Cartridge and flange connections, and solenoids with automotive plugs (IP6K9K), are available for optimised use in fuel cells.
Technical Specifications
- Seal
- EPDM
- Housing
- Stainless steel 1.4404/316L
- Internal leakage rate
- 1 x 10 - 4 mbar l/s (> 1.5 bar differential pressure)
- External leakage rate
- 1 x 10 - 4 mbar l/s
- Pressure level
- DN 6/DN 8: PN 40 bar
- Burst pressure
- > 250 bar for flange and threaded body
- Orifice
- DN 6, DN 8, DN 12, DN 16
- Thermal insulation class
- Epoxy coil class H
- Duty cycle
- 100 % continuous operation
- Mobile applications
- 12 V: 9 V…16 V
- Stationary applications
- ± 10 %
- Medium temperature
- - 40 °C…+ 90 °C
- Viscosity
- Max. 21 mm2/s (21 cSt)
- Electrical connection
- Plug contacts according to DIN EN 175 301 - 803 form A for cable plug Type 2518 .
- Ambient temperature
- - 40 °C…+ 55 °C/+ 75 °C for stationary applications depending on performance level
Standards & Compliance
- HS Code
- 8481.80
Cross References
- Burkert 6440
- Buerkert 6440
- Bürkert 6440
- Type 6440
- Burkert Type 6440
Product Documentation
More from Bürkert
Bürkert
Bürkert Servo-assisted 3/2-WAY Solenoid Valve for Pneumatic Systems
Type 6518
Bürkert
Bürkert Solenoid Valve for Pneumatics, 3/2-, 5/2- or 5/3-WAY Pilot-operated
Type 6519
Bürkert
Bürkert 3/2-WAY or 2 X 3/2-WAY Solenoid Valve for Pneumatic Applications
Type 6524
Bürkert
Bürkert 5/2-WAY Solenoid Valve for Pneumatic Applications
Type 6525
Bürkert
Bürkert 2/2-WAY Whisper Valve with Media Separation Type 6712
Bürkert
Bürkert Direct-acting 2/2-WAY Plunger Valve Type 7011
Bürkert
Bürkert Direct-acting 3/2-WAY Plunger Valve
Type 7012
Bürkert
Bürkert Flowmeter for Gases
Type 8008
Technical guides
Catalogue entry last verified: 2026-08-20. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.
Frequently asked questions
- Where can I buy Type 6440?
- Type 6440 can be ordered from cballast.com as a Bürkert catalogue item: request a quotation on this page or email sales@cballast.com, and the order ships worldwide.
- What is the manufacturer part number for this Bürkert product?
- The manufacturer part number is Type 6440.
- What is the HS code for Type 6440?
- The customs tariff (HS) code for Type 6440 is 8481.80.
- Who manufactures Type 6440?
- Type 6440 is a Bürkert product in the Valves range.
- Is a datasheet available for Type 6440?
- Yes — the Type 6440 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for Type 6440?
- The minimum order quantity is 1.
- Is Type 6440 available?
- Yes — Type 6440 is available to order: fulfilment is from supplier stock in cBallast's European network, dispatched directly from the warehouse to the customer, with the exact lead time stated in the quotation (reply within 24 hours).